CVE-2026-111384 Details
Description
Nezha 1.0.0 before 2.3.15 contains a memory exhaustion vulnerability in the dashboard file manager WebSocket endpoint because fmStream never calls SetReadLimit, leaving message size unbounded. Authenticated users with file manager scopes can send one oversized binary message to /api/v1/ws/file/:id, triggering an OOM kill that drops all agent monitoring.
A memory exhaustion vulnerability has been identified in Nezha versions 1.0.0 prior to 2.3.15. The issue resides in the dashboard file manager's WebSocket endpoint, specifically `GET /api/v1/ws/file/:id`. The vulnerability arises because the `fmStream` function fails to set a read limit on incoming WebSocket messages, allowing authenticated users with file manager permissions to send oversized binary messages. This unbounded message size can lead to an out-of-memory (OOM) condition, causing the Nezha process to be terminated and disrupting all agent monitoring.
Users can update to Nezha version 2.3.15 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 16, 2026CISA-ADP
Assessed Oct 23, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-770 | Allocation of Resources Without Limits or Throttling | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Nezha | >= 1.0.0, < 2.3.15 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 23, 2026 | CVE Modified | CISA-ADP |
| Oct 16, 2026 | New CVE Received | [email protected] |